Copyright>        OpenRadioss
Copyright>        Copyright (C) 1986-2024 Altair Engineering Inc.
Copyright>
Copyright>        This program is free software: you can redistribute it and/or modify
Copyright>        it under the terms of the GNU Affero General Public License as published by
Copyright>        the Free Software Foundation, either version 3 of the License, or
Copyright>        (at your option) any later version.
Copyright>
Copyright>        This program is distributed in the hope that it will be useful,
Copyright>        but WITHOUT ANY WARRANTY; without even the implied warranty of
Copyright>        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Copyright>        GNU Affero General Public License for more details.
Copyright>
Copyright>        You should have received a copy of the GNU Affero General Public License
Copyright>        along with this program.  If not, see <https://www.gnu.org/licenses/>.
Copyright>
Copyright>
Copyright>        Commercial Alternative: Altair Radioss Software
Copyright>
Copyright>        As an alternative to this open-source version, Altair also offers Altair Radioss
Copyright>        software under a commercial license.  Contact Altair to discuss further if the
Copyright>        commercial version may interest you: https://www.altair.com/radioss/.
C
Chd|====================================================================
Chd|  I4GMX3                        source/interfaces/inter3d1/i4gmx3.F
Chd|-- called by -----------
Chd|        I20STI3                       source/interfaces/inter3d1/i20sti3.F
Chd|        I21GAP3                       source/interfaces/inter3d1/i21gap3.F
Chd|        I23GAP3                       source/interfaces/inter3d1/i23gap3.F
Chd|        I24GAPM                       source/interfaces/inter3d1/i24sti3.F
Chd|        I25GAPM                       source/interfaces/inter3d1/i25sti3.F
Chd|        I7STI3                        source/interfaces/inter3d1/i7sti3.F
Chd|-- calls ---------------
Chd|====================================================================
      SUBROUTINE I4GMX3(X,IRECT,I,GAPMAX)
C
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER I
      my_real
     .   GAPMAX
      INTEGER IRECT(4,*)
      my_real
     .   X(3,*)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER JPERM(4), JJ, N1, N2
      my_real
     .   XL
C
      DATA JPERM/2,3,4,1/
C-----------------------------------------------------------------
C     LONGUEUR MINI DES COTES DE SEGMENT (CALCUL DU GAP MAX)
C-----------------------------------------------------------------
      DO JJ=1,4
        N1=IRECT(JJ,I)
        N2=IRECT(JPERM(JJ),I)
        XL=(X(1,N1)-X(1,N2))**2
     .    +(X(2,N1)-X(2,N2))**2
     .    +(X(3,N1)-X(3,N2))**2
        IF(XL>ZERO.AND.N1/=N2)GAPMAX= MIN(GAPMAX,XL)
      END DO
C
      RETURN
      END
